If you're currently living the single life, you already know it has lots of advantages. You get the whole bed to yourself. You can watch what you want on TV. You can move to a new city on a moment's notice to pursue the career of your dreams. You can live the life you want-and you don't have to compromise.

MSN Money, by Julie CazzinOctober 2010

Except, perhaps, when it comes to your finances. In that realm, it's hard not to feel that couples have it better. After all, when you book a hotel room, you often pay just as much as a couple does. When you go grocery shopping, everything seems to be packaged for two (or more). There's no family discount for you at the zoo, and if you get sick and can't work, there's no one to fall back on.